The Gunship is driven by vectored-thrust engines. First rolled off the assembly lines in 2170, the Mantis remains in service in dozens of armies across the galaxy. Its modular construction means that the versatile Mantis can be reconfigured as a low-altitude gunship, a fighter, a high-altitude bomber, or even a single-stage-to-orbit spaceplane that can engage enemy craft around a planet or a space station. The only role the Mantis cannot perform is that of a true deep-space fighter, as it has no FTL drive.
You unlock it when you research the Rim effect Shuttles.
It costs about the same but it has different advantages and disadvantages
The ship may look small in the preview but it's actually 12x12
The Stats of the Ship itself:
--Military--
Bombs: 8/16
Accuracy: Excellent
Build: Precise
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Passenger cap: 1 - 2
Space flight: Yes
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Speed: Excellent
Fuel capacity: 400 EEZO
Fuel efficiency: Excellent
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Cargo cap: 1,000kg
Internal power plant: 500w
Required: